Method subscribe

packages/svelte/src/store/public.d.ts:31–31

* Subscribe on value changes. * @param run subscription callback * @param invalidate cleanup callback

(this: void, run: Subscriber<T>, invalidate?: () => void)

	 * @param invalidate cleanup callback
	 */
	subscribe(this: void, run: Subscriber<T>, invalidate?: () => void): Unsubscriber;
}

/** Writable interface for both updating and subscribing. */